http://bugzilla.kernel.org/show_bug.cgi?id=13458

           Summary: general protection fault in sony-laptop
           Product: ACPI
           Version: 2.5
    Kernel Version: 2.6.30-rc8-wl
          Platform: All
        OS/Version: Linux
              Tree: Mainline
            Status: NEW
          Severity: normal
          Priority: P1
         Component: Platform-Drivers
        AssignedTo: acpi_platform-driv...@kernel-bugs.osdl.org
        ReportedBy: reinette.cha...@intel.com
        Regression: No


I am running kernel 2.6.30-rc8-wl which is the wireless-testing kernel (Linus's
kernel + latest wireless bits). On my system (a Sony VGN-Z540) I see a gpf when
I enable rfkill. Even though the gpf appears, rfkill works fine (wireless stops
working). The gpf only appeared once when I enabled rfkill, after that when I
disabled/enabled rfkill a few times I did not see it again. 

Here it is:

[  709.366404] general protection fault: 0000 [#1] SMP 
[  709.366551] last sysfs file: /sys/class/rfkill/rfkill5/state
[  709.366616] CPU 1 
[  709.366707] Modules linked in: iwlagn iwlcore led_class mac80211 cfg80211
i915 drm i2c_algo_bit i2c_core ppdev ipv6 acpi_cpufreq cpufreq_userspace
cpufreq_powersave cpufreq_ondemand cpufreq_conservative cpufreq_stats
freq_table container sbs sbshc lp parport arc4 ecb pcmcia joydev yenta_socket
rsrc_nonstatic af_packet tpm_infineon sony_laptop psmouse iTCO_wdt
iTCO_vendor_support pcmcia_core intel_agp video output tpm tpm_bios rfkill
pcspkr serio_raw processor battery button ac evdev ext3 jbd mbcache sg sr_mod
sd_mod cdrom ahci libata scsi_mod ehci_hcd uhci_hcd usbcore thermal fan
thermal_sys fuse [last unloaded: cfg80211]
[  709.369182] Pid: 66, comm: kacpi_notify Not tainted 2.6.30-rc8-wl #40
VGN-Z540N
[  709.369182] RIP: 0010:[<ffffffffa0200dda>]  [<ffffffffa0200dda>]
sony_nc_rfkill_set+0xa/0x40 [sony_laptop]
[  709.369182] RSP: 0018:ffff8800bb663dc0  EFLAGS: 00010286
[  709.369182] RAX: 0000000000000001 RBX: 0000000000000000 RCX:
0000000000000001
[  709.369182] RDX: 0000000000000001 RSI: 0000000000000001 RDI:
ffff880036f74480
[  709.369182] RBP: ffff8800bb663dd0 R08: 0000000000000000 R09:
0000000000000000
[  709.369182] R10: 0000000000000001 R11: 0000000000000001 R12:
0000000000000000
[  709.369182] R13: 0000000000000000 R14: 0000000000000000 R15:
ffff8800bb663df0
[  709.369182] FS:  0000000000000000(0000) GS:ffff88000105e000(0000)
knlGS:0000000000000000
[  709.369182] CS:  0010 DS: 0018 ES: 0018 CR0: 000000008005003b
[  709.369182] CR2: 00007ffff2051000 CR3: 00000000ba6b6000 CR4:
00000000000006e0
[  709.369182] DR0: 0000000000000000 DR1: 0000000000000000 DR2:
0000000000000000
[  709.369182] DR3: 0000000000000000 DR6: 00000000ffff0ff0 DR7:
0000000000000400
[  709.369182] Process kacpi_notify (pid: 66, threadinfo ffff8800bb662000, task
ffff8800bb658f40)
[  709.369182] Stack:
[  709.369182]  0000000000000000 0000000000000000 ffff8800bb663e20
ffffffffa0203292
[  709.369182]  ffff8800bb659548 0000000000000246 0000000000000202
ffff8800b729e2f8
[  709.369182]  ffff8800b5371898 ffff8800bb658f40 ffff880001058ec0
ffffffff803b5596
[  709.369182] Call Trace:
[  709.369182]  [<ffffffffa0203292>] sony_nc_notify+0x222/0x260 [sony_laptop]
[  709.369182]  [<ffffffff803b5596>] ? acpi_os_execute_deferred+0x0/0x39
[  709.369182]  [<ffffffff803b8192>] acpi_device_notify+0x14/0x16
[  709.369182]  [<ffffffff803c5690>] acpi_ev_notify_dispatch+0x5f/0x6b
[  709.369182]  [<ffffffff803b55c2>] acpi_os_execute_deferred+0x2c/0x39
[  709.369182]  [<ffffffff8024d720>] worker_thread+0x1f0/0x340
[  709.369182]  [<ffffffff8024d6cd>] ? worker_thread+0x19d/0x340
[  709.369182]  [<ffffffff802525a0>] ? autoremove_wake_function+0x0/0x40
[  709.369182]  [<ffffffff80263a8d>] ? trace_hardirqs_on+0xd/0x10
[  709.369182]  [<ffffffff8024d530>] ? worker_thread+0x0/0x340
[  709.369182]  [<ffffffff8024d530>] ? worker_thread+0x0/0x340
[  709.369182]  [<ffffffff80252156>] kthread+0x56/0x90
[  709.369182]  [<ffffffff8020ce7a>] child_rip+0xa/0x20
[  709.369182]  [<ffffffff8020c87c>] ? restore_args+0x0/0x30
[  709.369182]  [<ffffffff80252100>] ? kthread+0x0/0x90
[  709.369182]  [<ffffffff8020ce70>] ? child_rip+0x0/0x20
[  709.369182] Code: e1 89 c2 48 c7 c6 36 4e 20 a0 e8 b2 fe ff ff 89 c2 89 d0
48 8b 1c 24 4c 8b 64 24 08 c9 c3 0f 1f 00 55 89 f2 48 89 e5 48 83 ec 10 <8b> 34
bd 80 3e 20 a0 bf 24 01 00 00 81 c6 00 01 00 00 89 f0 0d 
[  709.369182] RIP  [<ffffffffa0200dda>] sony_nc_rfkill_set+0xa/0x40
[sony_laptop]
[  709.369182]  RSP <ffff8800bb663dc0>
[  709.375883] ---[ end trace 6c116875da7d6347 ]---

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